One guard told the court he encountered a man who was walking onto the base about 1:30 a.m. and told him to stop. He said the man approached and said, 'How are you?" in Pashtun and went inside the base.

Another guard said he saw an American man leaving the base around 2:30 a.m. The man also greeted him in Pashtun, asking "How are you?"

Neither guard was able to identify Bales as the shooter.